Samsung Galaxy A12s (a12s)

Samsung Galaxy A12 Nacho (SM-A127F/
DSN)

Picture of the Samsung Galaxy A12
Manufacturer	Samsung
Name	Galaxy A12 Nacho (SM-A127F/ DSN)
Codename	a12s
Released	2021
Type	handset
Hardware
Chipset	Exynos 850
CPU	Octa-core (Cortex-A55
GPU	Mali-G52 MP1
Display	720 x 1600 PLS LCD
Storage	64 GB
Memory	4 GB
Architecture	aarch64
Software
Original software	Android
Original version	11
postmarketOS
Category	testing
Pre-built images	no
Mainline	yes
postmarketOS kernel	6.4.0

This device is marked as not booting.
Status: pmbootstap install fails (at the "mkbootimg" part)

Contributors

• 674d527a
• Aunonno

Users owning this device

• 674d527a (Notes: working on porting)

How to unlock bootloader

1. Go to Settings > About device and click on Build Number seven time
2. Go to Settings > Enable OEM unlocking and turn it on
3. Power down device
4. Connect device to computer through a USB cable
5. Press power key and volume down key to turn on
6. Once the phone starts to boot up, immediately release power key and press volume up key
7. Release all keys then long press volume up key to enter unlock mode
8. Press volume up key to confirm

How to enter flash mode

1. Power down device
2. Connect device to computer
3. Press power key and volume down key to turn on
4. Once the phone starts to boot up, immediately release power key and press volume up key
5. Release all keys then press volume up key to continue
6. You should now be in download mode

Installation

Use pmbootstrap to build your own installation image.

$ pmbootstrap init
$ pmbootstrap install --fde
You will get an error here so everything after here is just a guess on how you will flash
$ pmbootstrap flasher flash_rootfs
$ pmbootstrap flasher flash_kernel

See also

Kernel Package Device Package TWRP